Re: [Amc-list] ELECTRO-RAMBLER =revisited=

[Tom Jennings <tomj@xxxxxxx>]

On Wed, 2 May 2007, Ken Ames wrote:

> Aren't electric motors like steam engines? Maximun torque at 0 rpm?
> Should be able to run the driveshaft off the motor. The electric buses here have
> no tranny.

Depends on the motor type. Series-wound, likely uncommon,
max. torque at 0 rpm, torque drops with RPM (I think). PM
(permanent magnet) I think are constant torque, so HP= torque
* rpm as always and gear-reduction would help. PM motors have
practical upper-HP limits (eg. huge magnets get to be expensive
and PITA). There's other types of motor configurations but I
forget 'em.
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